[Detective100]

Well, I can't talk much about firefall since I don't know how thr skill works- But why not give that item % chance to apawn flame seekers per new round + immunity to cinders, perhaps even in exchange to firefall?

Considering how fragile flame seekers actually are... I think a 24% chance to spawn a flame seeker is good enough?
A nice "bonus" could be making those fire cinders firefoxes use, but that'a more debatable.

Either that, or perhaps something that involves giving the oppenent burn? Something similiar to thosr poison boots, but by using a different mechanic.